Get Directory size in java

Tue Oct 21, 2008 7:52 pm

Can anybody help me to know the Directory size which contains
thousands of files. is there any method other than summing the size of
individual file inside the directory.

Tue Oct 21, 2008 7:53 pm

This class can compute the size of a directory, the key point is to use
recursion.

Code:: import java.io.File; public class What033 { public static void main(String[] args) { What033 w = new What033(); File dir = new File("D:\\temp"); System.out.println(w.getDirSizeInMegabytes(dir)); } long getDirSize(File dir) { long size = 0; if (dir.isFile()) { size = dir.length(); } else { File[] subFiles = dir.listFiles(); for (File file : subFiles) { if (file.isFile()) { size += file.length(); } else { size += this.getDirSize(file); } } } return size; } long getDirSizeInMegabytes(File dir) { return this.getDirSize(dir) / 1024 / 1024; } }

Tue Mar 17, 2009 7:13 pm

you can also use the apache commons io lib:

FileUtils.sizeOfDirectory

Code:: http://commons.apache.org/io/api-release/index.html

Thu Jun 07, 2012 4:31 pm

You can use use a FileFilter to visit the folder and compute the disk usage

Code:: import java.io.File; import java.io.FileFilter; public class DiskUsage implements FileFilter { public DiskUsage(){}; private long size = 0; public boolean accept(File file) { if ( file.isFile()) size += file.length(); else file.listFiles(this); return false; } public long getSize() { return size; } }

Code:: The complete tutorial is available at http://www.java-tutorial.ch/core-java-tutorial/calculate-file-disk-space/usage-with-java

Get Directory size in java

Get Directory size in java

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Re: Get Directory size in java

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